366 NORTH AMERICAN FLORA [Volume 25 



167. Polygala rhysocarpa Blake, sp. nov. 



Stems few or several from a very slender annual root, 6.5-25 cm. high, erect or ascending, 

 very slender, simple or subsimple, densely puberulous with spreading glanduliform hairs; lowest 

 leaves obovate, 3-5 mm. long, 0.8-1.8 mm. wide, acute, slightly fleshy, puberulent like the stem; 

 stem-leaves alternate, oblanceolate to linear, 4-14 mm. long, 0.5-1.5 mm. wide, acuminate at 

 each end, puberulent; peduncles 8-22 mm. long; racemes cylindric, acute or acuminate, dense 

 above, loose below, 3-5 mm. thick, the axis 1.4-8.5 cm. long; bracts lance-subulate, ciliolate, 

 deciduous, 1.3 mm. long; pedicels 0.4-0.7 mm. long; flowers whitish; sepals ovate or oval- 

 ovate to lance-elliptic, obtuse to subacuminate, slightly glandular-denticulate, 1-1.6 mm. long; 

 wings obovate, 2-2.2 mm. long, 1.1-1.2 mm. wide, rounded, cuneate at base, 3-5-veined, the 

 costa distinct and greenish; keel 1.8-2 mm. long, the crest on each side of a cuneate lamella 

 and 2 entire or 2-parted lobes; capsule obliquely oval, emarginate, rounded at base, glabrous, 

 whitish with pinkish margin, with 6-7 prominent slightly oblique mostly bifid greenish veins 

 on each side of septum, narrowly margined especially on upper side with venose margin, almost 

 winged on upper side at apex, 2.8-3 mm. long, 1.8-2.2 mm. wide; seed cylindric, curved, pilos- 

 ulous, 1.8 mm. long; aril 1 mm. long, the 2 linear lobes appressed. 



Type collected at Orizaba, Veracruz. Mexico, 1855, F. Mueller (herb. N. Y. Bot. Gard). 



168. Polygala semialata S. Wats. Proc. Am. 



Acad. 17: 326. 1882. 



Stems numerous from a fruticulose base, erect or lax, almost filiform, branched, sparsely 

 and minutely incurved-puberulous, 8-21 cm. long; leaves linear, 4.8-S.5 mm. long, 0.5-1 mm. 

 wide, acuminate at both ends, mucronulate, slightly concave above, convex and 1-nerved 

 beneath, glabrous or microscopically incurved-puberulous; racemes 3-12.5 cm. long, 15-22- 

 flowered; flowers whitish, purplish-green- veined ; sepals orbicular to oval, rounded, greenish, 

 glabrous, 0.6 mm. long; wings oval-obovate, 1.4 mm. long, 0.8 mm. wide, rounded, cuneate 

 at base, 3-nerved; keel 1.7 mm. long, the crest on each side of about 3 lobes; capsule narrowly 

 oblong, curved, rounded at each end, 3.6 mm. long, 1.3 mm. wide, the upper cell larger, dis- 

 tinctly winged, the lower wingless, indehiscent; seed cylindric, curved, finely pilosulous, 2.5 

 mm. long; aril 1.7 mm. long, the corneous umbo minute, the 2 scarious lateral lobes appressed 



Type locality: Monterey, Nuevo Le6n. 

 Distribution: Coahuila, Nuevo Le6n, and Zacatecas. 



Illustrations: M£m. Soc. Phys. Geneve 31(2) ! : pi. 26, f. 10, 11; Contr. Gray Herb. 47: 

 pi. 2, f. 79. 



169. Polygala hemipterocarpa A. Gray, PL 



Wright. 2: 31. 1853. 



Stems several, sparsely branched, erect from a fruticulose base, sulcate, glabrous, slightly 

 glaucous, 1.2-5.6 dm. high; leaves linear, 6-23 mm. long, 0.6-1 mm. wide, acute or subacumi- 

 nate, mucronate, obtuse at base, thickish, flattish above, beneath convex, 1-nerved, scarcely 

 sulcate, glabrous ; racemes 3-21 cm. long; flowers white, greenish-veined; sepals oval to ovate, 

 obtuse, 1.6-2.3 mm. long; wings obovate, 3.5-4 mm. long, 1.6-1.8 mm. wide, rounded, 

 5-nerved; keel 3.4 mm. long, the crest on each side of about 3 2-4-lobed processes ; capsule oblong, 

 5 mm. long, 2.3 mm. wide, the upper cell the longer, broadly scarious-winged, erose, the lower 

 wingless, filled by the seed; seed short-silky-pilosulous, 2.7 mm. long; aril (of seed in winged 

 cell) 2 mm. long, the 2 scarious lobes linear; aril of seed in wingless cell obsolescent. 



Type locality: Stony hills of the Sonoita. near Deserted Rancho, on the borders of Sonora. 

 Distribution: Texas to Arizona, and southward to Hidalgo. 

 Illustration: Mem. Soc. Phys. Geneve 31 (2) 2 : pi. 26, f. 1, 2. 



170. Polygala macroloncha Chod. Bot. Jahrb. 52: Beibl. 

 115: 84. 1914. 



Stems slender, green, glabrous, denudate below, leafy above, from a suffruticulose base; 

 leaves linear-acicular, 9-10 mm. long, 1-1.5 mm. wide, or smaller, erect, acute at each end, 

 glabrous; racemes 7 mm. thick, 1.5-2 cm. long; pedicels 0.5 mm. long; bracts acicular, cadu- 



